EWC understand about the critical importance of good quality telephone calls to business users. Since most VoIP service providers are PC to Phone companies focused on the consumer market they are looking to offer the lowest lowest call rates possible. To achieve these low call rates some operators use low quality carries to terminate the calls. These carries may have very limited capacity, or may be operating "grey" routes that are not available all of the time. This can mean not just bad call quality but also very low success rates in connecting to your call destination. For many consumers this is a price worth paying since the alternative would be unaffordable.